*The following content is generated by AI and is for reference only.
<h3>Overview</h3>
<p>Pinaverium Bromide is a selective calcium channel blocker used in gastroenterology. The <strong>core synthesis</strong> involves quaternization of 1,4-dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic acid dimethyl ester with methyl bromide. Its molecular formula is C<sub>20</sub>H<sub>23</sub>BrN<sub>2</sub>O<sub>4</sub>, CAS No. 89724-38-1.</p>
<h3>Application</h3>
<ul>
<li><strong>Gastrointestinal Therapy:</strong> Treatment of irritable bowel syndrome (IBS) and functional bowel disorders.</li>
<li><strong>Diagnostics:</strong> Adjunct use in colorectal endoscopy to improve visualization by reducing colonic spasms.</li>
<li><strong>Pharmaceutical Manufacturing:</strong> Bulk active pharmaceutical ingredient (API) production for tablet formulations.</li>
</ul>
<h3>Precautions</h3>
<p>Avoid use in patients with severe hepatic impairment or known hypersensitivity. Store API in sealed containers at controlled room temperature (15-25°C) protected from light and moisture to maintain stability.</p>